Yes the Dodge is pre-wired at the factory for a controller you need to buy the linking wire its 15 dollars or less at NAPA or similar parts store, the plug in point probably is next to the E brake pedal.

If your new to Dodge read up on the lighting circuit protection , its really really dumb and will give you a head ache and a pain in your wallet and then you will curse Mopar for such a stupid idea.

My truck is a Chevrolet. The harness connector is in the glove box. The dealer I bought my trailer from hooked the controller up in my old truck, but I think I can figure it out.....just a matter of finding the time!